package com.liang.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object userLoginInfo = request.getSession().getAttribute("UserLoginInfo");
        if(userLoginInfo==null){
            request.setAttribute("msg","权限不够，请先登录");
            request.getRequestDispatcher("index.html").forward(request,response);

            return false;
        }
        return true;
    }

}
